Adjustable spanner.



P. P. STRMBBRG.

ADJUSTABLE SPANNER. A APPLICATION FILED JUNE 26, v1908.

940,625. Patented Nov. 16, 1909.

' Atinr'nay.

UNITED sTATEs 'PATENT oEEioE.

FEDER PEDERSEN STRMBERG, OF GJESAASEN, NORWAY, ASSIGNR OF ONE-HALF TO OLAF OSTBY, 0F GJ'ESAAS'EN, NCBI/VAX.

ADJUSTABLE SPANNER.

Specification of Letters Patent.

Patented Nev. 16, 1909.

To all whom it may concern:

Be it known that I, FEDER PEnEnsEN SrnMBERG, mechanician, a citizen of the Kingdom of Norway, residing at Gjesaasen, Flisen Station, Norway, have invented a new and useful Improvement in Adjustable Ltipanners; and I do hereby declare the following to bc a full, clear, and exact description of the saine.

rIhe present invention has for its object to provide an adjustable spanner or wrench which is characterized substantially by a device whereby the jaws may be adjusted at small steps within wide limits by a single manipulation.

The invention is illustrated in the accompanying drawing, in which Figure 1 is a side view of the Spanner partly in section, Fig. Q is a portion of a longitudinal section on a plane perpendicular to the section-plan in Fig. 1. Fig. 8 is a side view of the toothed arm. Figs. 4, 5 and 6 are cross sections respectively on the lines I I, II II and III III in Fig-1, seen in the direction of the arrows at said lines.

The outer jaw 1 is fastened to a bar 3 which is inserted in the carrying part l of the inner jaw Q Said part has a U-shaped section (see Fig. and surrounds the bar 3 on its three sides so that the parts 3 and may slide longitudinally in relation to each other during the adjustment of the spanner. rIhe said parts 8, 4 are held together by means of the handle 5 and the two lateral bands 6 For this purpose the one end plate 7 of the handle surrounds tightly the outer part 1 and is provided with two side openings 8 (Fig. 5) sursounding the upper reduced partsV or recesses Q of the bands 6 while the other end plate 10 of the handle surrounds tightly the bar 3 (Fig. 6) and is provided with similar side openings 11 surrounding the lower reduced part or recesses 1Q of the bands 6 The latter project out through the handle and their upper ends which are extended toward the jaw Q are provided with pins 13 projecting through side holes in the part lt (see Fig. Q). In this manner the parts Q and 4 are connected with the handle through the bands 6- which at the same time hold together the several parts constituting the handle viz: the sleeve 5- and the end plates 7 and 10 by means of the noses M formed by the od-sets at both sides of the reduced parts Q and 1Q 0n the part of the bar 3 located within the handle 5- are arranged lateral teeth 15 and adjacent to the same is a correspondingly toothed part 1G forming a part of an arm 17 projecting out through the plate 10 which prevents the arm from moving longitudinally by its reduced part 18- (Fig. 8) being tightly surrounded by the opening 19 in said plate (see Fig. 6).

The arm 17 is provided with a nose Q1 engaging the side of the bar 3 and normally holding the teeth 1G out of mesh with the teeth 15 The mesh of both tooth sets is effected by turning the handle 5 which preferably is provided with an outer cover QQ and which has inwardly an eccentric or curved face QO engaging the back side of the toothed part 16 and pressing the latter gradually toward the teeth 15 when the handle is turned so that finally the parts 15 and 16 are locked rigidly together. As now the part 15 is connected with the jaw 1 through the bar 3 and as further the toothed bar 15 is connected with the jaw Q through the parts 17, 18, 10, 6, 13 and lt also the jaws 1 and Q are rigidly locked together or loosened from each other, respectively, according as the handle 5 is rotated in one direction or the other. As the arm 17 is somewhat springy the nose Q1 and the part 18- constantly tend to hold both toothed parts 15 and 16 out of mesh with each other.

A removable pin Q3 normally prevents the handle with its parts 4.- and Q from sliding @if from the bar 3 When this pin is screwed out, the bar 3 may be pulled out whereafter the remaining parts of the spanner freely may be separated. When the outer jaw 1 as shown in Fig. 1, is made somewhat longer than the inner one the device also may serve as a hammer.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. In an adjustable Spanner or wrench, a bar provided with a wrench-jaw and also having a toothed portion, a second wrenchjaw, two plates connected with the second wrench-jaw and slidably and non-rotatably connected with the bar, an arm having teeth for engagement with those of the bar, a handle rotatably supported between said plates an inclosing the arm aforesaid and the toothed portion ot the bar, said handle being provided with a portion which, upon its rotation, moves teeth of said arm into engagement with teeth o the bar.

2. In an adjustable spanner or wrench, aA

bar provided with a wrench-jaw and also having a toothed portion, a second wrenchjaw and a part for carrying the same and slidably engaging the bar, side straps connected with said carrying part and having reduced end portions, two plates slidably and non-rotatably connected with the bar and formed to engage with the reduced end portions ot the bands, an arm having teeth for engagement with those of the bar, a handle rotatably supported between said plates and inclosing the arm aforesaid and the toothed portion ot' the bar, and means for normally holding said arm out of enga-gement with the bar, said handle being provided with a portion which, upon its rotation, moves teeth of said arm into engagement with teeth o'f the bar.

3. In an adjustable Spanner or wrench, a bar provided with a wrench-jaw and also having a toothed portion, a second wrenchjaw, two plates connected with the second wrench-j aw and slidably and non-rotatably connected with the bar, a spring arm having teeth for engagement with those of thel bar and also formed with a nose for engagement with the bar to hold the teeth away from those of said bar, and having a portion in engage-ment with one of said plates, a handle rotatably supported between said plates and inclosing the arm aforesaid and the toothed portion of the arm, and means capable, upon rotation ot the handle, for moving the teeth of said arm into engagement with those of the bar.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PEDER rEDERsEN STRMBERG.

lVitnesses t AXU LAUER, RICHARD S'ronnn. 

